Hi Everyone, I have now designed multiple buildings/tenant improvements where there are free standing phone booths (think London style) throughout the project. I’ve heard mixed requirements when it comes to protecting them:
Does anyone know what section of code drives this protection?
What has everyone else done before in the past?
Thank you in advance!
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11/9/2021 07:31:32 am
The answer is....it depends.
11/9/2021 08:13:12 am
11/9/2021 07:35:40 am
For the first bullet point, in NFPA 13 2016:
11/9/2021 08:18:34 am
11/9/2021 08:20:52 am
This is an AHJ interpretation. I had to add a pendant sprinkler head to each phone booth on a recent upfit even though it is considered pre-assembled furniture.
11/9/2021 09:13:24 am
I think the best advice I could offer would be to seek a ruling from the AHJ. In the end, their requirements will drive what you do any way.
11/9/2021 09:28:47 am
As an AHJ I would not be comfortable requiring these to be protected from within.
11/10/2021 09:17:33 am
11/9/2021 09:29:01 am
Practical point of view (not code related, not AHJ opinion as this would depend from one individual/area to the other, just the rule I apply as a loss prevention engineer for an insurance company when I meet this configuration)
11/10/2021 09:19:34 am
11/9/2021 10:47:35 am
I read all the comments with interest. I add that the idea of a sprinkler discharge in a small enclosed space with an occupant present ( potentially) might need to be looked at from a life safety perspective as well.
11/9/2021 11:11:09 am
See 2022 edition of NFPA 13.
11/10/2021 09:15:36 am
12/29/2021 10:49:08 am
Was this addition made to accommodate the "cocoon" structures in cubicle offices? My guess is that that is why the 24 sq. ft. number was used because that happens to be the exact size. I often run into this problem in medical facilities with sound proof rooms for sleep studies and sometimes for hearing testing. They may not extend to the ceiling but they are always more than 24 sq. ft.
11/10/2021 10:34:18 am
chiming in to thank you MATT COUTO...
11/11/2021 10:19:36 am
The comments on this make me think the question could be used to weed out irritable AHJ syndrome, and the associated dollar losses imposed on businesses. But seriously (because it borders on funny), if the mothership sprinklers are adequate, it can stay. If not, modify, remove, or add an ugly pipe and sprinkler head.
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